#include <iostream>
#include <iomanip>

int main()
{
// init list of floating-point values:
std::initializer_list<double> values {
0x1p4, // 16
0xA, // 10
0xAp2, // 40
5e0, // 5
0x1.4p+2, // 5
1e5, // 100000
0x1.86Ap+16, // 100000
0xC.68p+2, // 49.625
};
// print all values both as decimal and hexadecimal value:
for (double d : values) {
std::cout << "dec: " << std::setw(6) << std::defaultfloat << d
<< " hex: " << std::hexfloat << d << '\n';
}
}